Fix overflow in mangle_dupechar_last function

2017-09-16 20:43:38 +03:00
parent 34c5eac550
commit de7ccd88ef
3 changed files with 3 additions and 0 deletions
@@ -503,6 +503,7 @@ static int mangle_dupechar_last (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8
 {
  const int out_len = len + p0;

+  if (len     ==                0) return (len);
  if (out_len >= RP_PASSWORD_SIZE) return (len);

  const u8 c = buf[len - 1];